David Armstrong, MS, AMFT
NPI 1023629102 · Marriage & Family Therapist · San Francisco, CA
David Armstrong, MS, AMFT is a Marriage & Family Therapist provider in San Francisco, CA (NPI 1023629102).
Provider details
- NPI number
- 1023629102
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MS, AMFT
- Sex
- Male
- Sole proprietor
- No
- License
- AMFT120607 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-08-12
- Last updated
- 2021-05-17
- Certified
- 2021-05-17
Frequently asked questions
- What is David Armstrong's NPI number?
- David Armstrong's National Provider Identifier (NPI) is 1023629102, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Armstrong's specialty?
- David Armstrong is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is David Armstrong located?
- David Armstrong's practice location on file with NPPES is 1385 Mission St Ste 200, San Francisco, CA 94103-2631.
- What is David Armstrong's phone number?
- The practice phone number listed in the NPPES registry for David Armstrong is (415) 864-7833.
- Is David Armstrong's NPI active?
- Yes — David Armstrong's NPI (1023629102) is active in the NPPES registry as of the last update on 2021-05-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.